Chen, F.-C.F.-C.ChenWu, J.-L.J.-L.WuLee, C.-L.C.-L.LeeHuang, W.-C.W.-C.HuangChen, H.-M.P.H.-M.P.ChenWEN-CHANG CHEN2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-67650468325&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/348042We have prepared top-illuminated organic photovoltaic devices on stainless-steel substrates, using molybdenum trioxide/indium tin oxide as the transparent top electrode. Incorporating an Al counter electrode grid having a shadow fraction of 10% effectively reduced the device resistance, thereby enhancing the power conversion efficiency to ca. 3%. This device exhibited superior mechanical flexibility. The inverted device architecture eliminated the need to use low-work-function metals, which are air sensitive and easily oxidized, thereby improving the air stability of the flexible devices. © 2009 IEEE.Energy resources; Flexible structures; Photovoltaic cells; Polymers[SDGs]SDG7Air stability; Counter electrodes; Device resistance; Flexible device; Flexible polymers; Inverted devices; Inverted structure; Mechanical flexibility; Organic photovoltaic devices; Power conversion efficiencies; Conversion efficiency; Energy resources; Flexible structures; Metal foil; Molybdenum; Photoelectrochemical cells; Photovoltaic cells; Photovoltaic effects; Polymers; Stainless steel; Tin; Structural metalsjournal article10.1109/LED.2009.20223452-s2.0-67650468325WOS:000267607900010